perlquestion
Freezer
This post takes code that was given to me from a previous post.
<br><br>
Within a loop the following is run:
<code>
my $timer_go:shared = 0;
my $worker = threads->create(\&worker, $call);
my $timer = threads->create(\&timer,$worker);
$timer_go=1;
$timer->join();
$worker->join();
</code>
The subroutines used are:
<code>
sub timer {
my $worker = shift;
my $timer_go;
while(1){
if($timer_go){
my $count = 0;
while(1){
$count++;
if($count > 20){
print "timed out\nHit enter to finish\n";
# Send a signal to a thread
$worker->kill('INT');
return;
}
sleep 1;
print "timing $count\n";
}
}else{sleep 1}
}
}
sub worker {
my $call = shift;
$|++;
$SIG{INT} = sub{ warn "Caught Zap!\n"; sleep 1; exit; };
# do your timed program here.
#print "I am here \n\n";
print $call;
#exit;
system ($call); # This is where my system call is
my $worker_pid = open( READ, "top -d 1 -b |" );
print "\t$worker_pid\n";
while(<READ>){ }
return;
}
</code>
For some reason unkown to me the system call works within the subroutine only once. Are all the processes killed and not just the one? I want to do the equivalent of me entering control-C in my Linux command line prompt. Presumably that is not happening with my Perl script.